DIELECTRIC-PROPERTIES OF SRTIO3 EPITAXIAL FILM AND THEIR APPLICATION TO MEASUREMENT OF WORK FUNCTION OF YBA2CU3OY EPITAXIAL FILM

被引：32

作者：

HIRANO, T

UEDA, M

MATSUI, K

FUJII, T

SAKUTA, K

KOBAYASHI, T

机构：

[1] Department of Electrical Engineering, Osaka University, Osaka, 560

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1992年 / 31卷 / 9B期

关键词：

SRTIO3; YBA2CU3OY; EPITAXIAL FILM; DIELECTRIC CONSTANT; POLARIZATION; WORK FUNCTION;

D O I：

10.1143/JJAP.31.L1345

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dielectric properties of SrTiO3 epitaxial film were studied using film grown on oxide superconductor YBa2Cu3Oy. They were, to a certain extent, similar to those of the single-crystal bulk in terms of both temperature and electric field dependence, though the value of the dielectric constant was low, particularly at cryogenic temperatures. The observed dielectric properties were analytically expressed. Using the dramatic field dependence of the dielectric constant of the SrTiO3 film in the Au-SrTiO3-YBa2Cu3Oy metal-insulator-superconductor (MIS) structure, we determined the work function of (001)YBa2Cu3Oy epitaxial film to be approximately 6.1 eV.

引用

页码：L1345 / L1347

页数：3

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